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5d10d135 | 1 | /******************************************************************************* |
a3767fd9 | 2 | * Copyright (c) 2009, 2011 Ericsson, MontaVista Software |
5d10d135 ASL |
3 | * |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * William Bourque (wbourque@gmail.com) - Initial API and implementation | |
a3767fd9 | 11 | * Yufen Kuo (ykuo@mvista.com) - add support to allow user specify trace library path |
5d10d135 ASL |
12 | *******************************************************************************/ |
13 | ||
6c13869b | 14 | package org.eclipse.linuxtools.lttng.core.trace; |
5d10d135 | 15 | |
12c155f5 | 16 | import java.io.FileNotFoundException; |
28b94d61 FC |
17 | import java.util.HashMap; |
18 | import java.util.Iterator; | |
19 | import java.util.Vector; | |
20 | ||
12c155f5 | 21 | import org.eclipse.core.resources.IProject; |
6c13869b FC |
22 | import org.eclipse.linuxtools.lttng.core.TraceHelper; |
23 | import org.eclipse.linuxtools.lttng.core.event.LttngEvent; | |
24 | import org.eclipse.linuxtools.lttng.core.event.LttngEventContent; | |
6c13869b FC |
25 | import org.eclipse.linuxtools.lttng.core.event.LttngEventType; |
26 | import org.eclipse.linuxtools.lttng.core.event.LttngLocation; | |
27 | import org.eclipse.linuxtools.lttng.core.event.LttngTimestamp; | |
28 | import org.eclipse.linuxtools.lttng.core.exceptions.LttngException; | |
1b70b6dc | 29 | import org.eclipse.linuxtools.lttng.core.tracecontrol.utility.LiveTraceManager; |
5d10d135 | 30 | import org.eclipse.linuxtools.lttng.jni.JniEvent; |
28b94d61 | 31 | import org.eclipse.linuxtools.lttng.jni.JniMarker; |
5d10d135 | 32 | import org.eclipse.linuxtools.lttng.jni.JniTrace; |
28b94d61 | 33 | import org.eclipse.linuxtools.lttng.jni.JniTracefile; |
004f471b | 34 | import org.eclipse.linuxtools.lttng.jni.common.JniTime; |
550d787e | 35 | import org.eclipse.linuxtools.lttng.jni.exception.JniException; |
004f471b | 36 | import org.eclipse.linuxtools.lttng.jni.factory.JniTraceFactory; |
4df4581d | 37 | import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp; |
1b70b6dc | 38 | import org.eclipse.linuxtools.tmf.core.event.TmfEvent; |
6c13869b FC |
39 | import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange; |
40 | import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp; | |
1b70b6dc PT |
41 | import org.eclipse.linuxtools.tmf.core.experiment.TmfExperiment; |
42 | import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest.ExecutionType; | |
43 | import org.eclipse.linuxtools.tmf.core.request.TmfEventRequest; | |
44 | import org.eclipse.linuxtools.tmf.core.signal.TmfTraceUpdatedSignal; | |
6c13869b FC |
45 | import org.eclipse.linuxtools.tmf.core.trace.ITmfContext; |
46 | import org.eclipse.linuxtools.tmf.core.trace.ITmfLocation; | |
47 | import org.eclipse.linuxtools.tmf.core.trace.TmfCheckpoint; | |
48 | import org.eclipse.linuxtools.tmf.core.trace.TmfContext; | |
49 | import org.eclipse.linuxtools.tmf.core.trace.TmfTrace; | |
5d10d135 | 50 | |
3fbd810a | 51 | class LTTngTraceException extends LttngException { |
12c155f5 | 52 | static final long serialVersionUID = -1636648737081868146L; |
3fbd810a | 53 | |
12c155f5 FC |
54 | public LTTngTraceException(String errMsg) { |
55 | super(errMsg); | |
56 | } | |
3fbd810a FC |
57 | } |
58 | ||
5d10d135 | 59 | /** |
64fe8e8a FC |
60 | * <b><u>LTTngTrace</u></b> |
61 | * <p> | |
07d9e2ee | 62 | * |
12c155f5 FC |
63 | * LTTng trace implementation. It accesses the C trace handling library (seeking, reading and parsing) through the JNI |
64 | * component. | |
5d10d135 | 65 | */ |
e31e01e8 | 66 | public class LTTngTrace extends TmfTrace<LttngEvent> { |
9b635e61 | 67 | |
12c155f5 FC |
68 | public static boolean PrintDebug = false; |
69 | public static boolean UniqueEvent = true; | |
70 | ||
71 | private final static boolean SHOW_LTT_DEBUG_DEFAULT = false; | |
72 | private final static boolean IS_PARSING_NEEDED_DEFAULT = !UniqueEvent; | |
73 | private final static int CHECKPOINT_PAGE_SIZE = 50000; | |
1b70b6dc | 74 | private final static long LTTNG_STREAMING_INTERVAL = 2000; // in ms |
12c155f5 FC |
75 | |
76 | // Reference to our JNI trace | |
c5b45b39 FC |
77 | private JniTrace currentJniTrace; |
78 | ||
79 | LttngTimestamp eventTimestamp; | |
99005796 | 80 | String eventSource; |
c5b45b39 | 81 | LttngEventContent eventContent; |
4641c2f7 | 82 | String eventReference; |
12c155f5 FC |
83 | |
84 | // The actual event | |
c5b45b39 | 85 | LttngEvent currentLttngEvent; |
12c155f5 FC |
86 | |
87 | // The current location | |
c5b45b39 FC |
88 | LttngLocation previousLocation; |
89 | ||
90 | LttngEventType eventType; | |
12c155f5 | 91 | |
12c155f5 | 92 | // Hashmap of the possible types of events (Tracefile/CPU/Marker in the JNI) |
c5b45b39 FC |
93 | HashMap<Integer, LttngEventType> traceTypes; |
94 | ||
12c155f5 | 95 | // This vector will be used to quickly find a marker name from a position |
c5b45b39 FC |
96 | Vector<Integer> traceTypeNames; |
97 | ||
98 | private String traceLibPath; | |
12c155f5 | 99 | |
1b70b6dc PT |
100 | private long fStreamingInterval = 0; |
101 | ||
12c155f5 FC |
102 | public LTTngTrace() { |
103 | } | |
104 | ||
f4c52cea | 105 | @Override |
12c155f5 FC |
106 | public boolean validate(IProject project, String path) { |
107 | if (super.validate(project, path)) { | |
108 | String traceLibPath = TraceHelper.getTraceLibDirFromProject(project); | |
109 | try { | |
110 | LTTngTraceVersion version = new LTTngTraceVersion(path, traceLibPath); | |
111 | return version.isValidLttngTrace(); | |
112 | } catch (LttngException e) { | |
113 | } | |
114 | } | |
115 | return false; | |
116 | } | |
117 | ||
f4c52cea | 118 | @Override |
0710697b PT |
119 | public void initTrace(String name, String path, Class<LttngEvent> eventType) throws FileNotFoundException { |
120 | initLTTngTrace(name, path, eventType, CHECKPOINT_PAGE_SIZE, false); | |
c5b45b39 FC |
121 | } |
122 | ||
f4c52cea | 123 | @Override |
0710697b PT |
124 | public void initTrace(String name, String path, Class<LttngEvent> eventType, int cacheSize) throws FileNotFoundException { |
125 | initLTTngTrace(name, path, eventType, cacheSize, false); | |
c5b45b39 FC |
126 | } |
127 | ||
f4c52cea | 128 | @Override |
0710697b PT |
129 | public void initTrace(String name, String path, Class<LttngEvent> eventType, boolean indexTrace) throws FileNotFoundException { |
130 | initLTTngTrace(name, path, eventType, CHECKPOINT_PAGE_SIZE, indexTrace); | |
c5b45b39 FC |
131 | } |
132 | ||
f4c52cea | 133 | @Override |
0710697b PT |
134 | public void initTrace(String name, String path, Class<LttngEvent> eventType, int cacheSize, boolean indexTrace) throws FileNotFoundException { |
135 | initLTTngTrace(name, path, eventType, cacheSize, indexTrace); | |
c5b45b39 FC |
136 | } |
137 | ||
0710697b PT |
138 | private void initLTTngTrace(String name, String path, Class<LttngEvent> eventType, int cacheSize, boolean indexTrace) throws FileNotFoundException { |
139 | super.initTrace(name, path, eventType, indexTrace); | |
12c155f5 FC |
140 | try { |
141 | currentJniTrace = JniTraceFactory.getJniTrace(path, traceLibPath, SHOW_LTT_DEBUG_DEFAULT); | |
142 | } catch (Exception e) { | |
143 | throw new FileNotFoundException(e.getMessage()); | |
144 | } | |
145 | ||
146 | // Export all the event types from the JNI side | |
147 | traceTypes = new HashMap<Integer, LttngEventType>(); | |
148 | traceTypeNames = new Vector<Integer>(); | |
149 | initialiseEventTypes(currentJniTrace); | |
150 | ||
00641a97 | 151 | // Build the re-used event structure |
12c155f5 | 152 | eventTimestamp = new LttngTimestamp(); |
4641c2f7 | 153 | eventSource = ""; //$NON-NLS-1$ |
12c155f5 FC |
154 | this.eventType = new LttngEventType(); |
155 | eventContent = new LttngEventContent(currentLttngEvent); | |
4641c2f7 | 156 | eventReference = getName(); |
12c155f5 FC |
157 | |
158 | // Create the skeleton event | |
159 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, this.eventType, eventContent, | |
160 | eventReference, null); | |
161 | ||
162 | // Create a new current location | |
163 | previousLocation = new LttngLocation(); | |
164 | ||
165 | // Set the currentEvent to the eventContent | |
166 | eventContent.setEvent(currentLttngEvent); | |
167 | ||
1b70b6dc PT |
168 | // // Bypass indexing if asked |
169 | // if ( bypassIndexing == false ) { | |
170 | // indexTrace(true); | |
171 | // } | |
172 | // else { | |
173 | // Even if we don't have any index, set ONE checkpoint | |
174 | // fCheckpoints.add(new TmfCheckpoint(new LttngTimestamp(0L) , new | |
175 | // LttngLocation() ) ); | |
176 | ||
177 | initializeStreamingMonitor(); | |
178 | } | |
179 | ||
180 | private void initializeStreamingMonitor() { | |
181 | JniTrace jniTrace = getCurrentJniTrace(); | |
182 | if (jniTrace == null || (!jniTrace.isLiveTraceSupported() || !LiveTraceManager.isLiveTrace(jniTrace.getTracepath()))) { | |
183 | // Set the time range of the trace | |
184 | TmfContext context = seekLocation(null); | |
185 | LttngEvent event = getNextEvent(context); | |
186 | LttngTimestamp startTime = new LttngTimestamp(event.getTimestamp()); | |
187 | LttngTimestamp endTime = new LttngTimestamp(currentJniTrace.getEndTime().getTime()); | |
188 | setTimeRange(new TmfTimeRange(startTime, endTime)); | |
189 | TmfTraceUpdatedSignal signal = new TmfTraceUpdatedSignal(this, this, getTimeRange()); | |
190 | broadcast(signal); | |
191 | return; | |
192 | } | |
193 | ||
12c155f5 FC |
194 | // Set the time range of the trace |
195 | TmfContext context = seekLocation(null); | |
196 | LttngEvent event = getNextEvent(context); | |
1b70b6dc PT |
197 | setEndTime(TmfTimestamp.BigBang); |
198 | final long startTime = event != null ? event.getTimestamp().getValue() : TmfTimestamp.BigBang.getValue(); | |
199 | fStreamingInterval = LTTNG_STREAMING_INTERVAL; | |
200 | ||
201 | final Thread thread = new Thread("Streaming Monitor for trace " + getName()) { //$NON-NLS-1$ | |
202 | LttngTimestamp safeTimestamp = null; | |
203 | TmfTimeRange timeRange = null; | |
204 | ||
f4c52cea | 205 | @SuppressWarnings("unchecked") |
1b70b6dc PT |
206 | @Override |
207 | public void run() { | |
208 | while (!fExecutor.isShutdown()) { | |
209 | TmfExperiment<?> experiment = TmfExperiment.getCurrentExperiment(); | |
210 | if (experiment != null) { | |
f4c52cea | 211 | @SuppressWarnings("rawtypes") |
1b70b6dc PT |
212 | final TmfEventRequest request = new TmfEventRequest<TmfEvent>(TmfEvent.class, TmfTimeRange.Eternity, 0, ExecutionType.FOREGROUND) { |
213 | @Override | |
214 | public void handleCompleted() { | |
215 | updateJniTrace(); | |
216 | } | |
217 | }; | |
218 | synchronized (experiment) { | |
219 | experiment.sendRequest(request); | |
220 | } | |
221 | try { | |
222 | request.waitForCompletion(); | |
223 | } catch (InterruptedException e) { | |
224 | e.printStackTrace(); | |
225 | } | |
226 | } else { | |
227 | updateJniTrace(); | |
228 | } | |
229 | try { | |
230 | Thread.sleep(LTTNG_STREAMING_INTERVAL); | |
231 | } catch (InterruptedException e) { | |
232 | e.printStackTrace(); | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
237 | private void updateJniTrace() { | |
238 | JniTrace jniTrace = getCurrentJniTrace(); | |
239 | currentJniTrace.updateTrace(); | |
240 | long endTime = jniTrace.getEndTime().getTime(); | |
241 | LttngTimestamp startTimestamp = new LttngTimestamp(startTime); | |
242 | LttngTimestamp endTimestamp = new LttngTimestamp(endTime); | |
243 | if (safeTimestamp != null && safeTimestamp.compareTo(getTimeRange().getEndTime(), false) > 0) { | |
244 | timeRange = new TmfTimeRange(startTimestamp, safeTimestamp); | |
245 | } else { | |
246 | timeRange = null; | |
247 | } | |
248 | safeTimestamp = endTimestamp; | |
249 | if (timeRange != null) { | |
250 | setTimeRange(timeRange); | |
251 | } | |
252 | } | |
253 | }; | |
254 | thread.start(); | |
255 | } | |
c5b45b39 | 256 | |
1b70b6dc PT |
257 | /* (non-Javadoc) |
258 | * @see org.eclipse.linuxtools.tmf.trace.TmfTrace#getStreamingInterval() | |
259 | */ | |
260 | @Override | |
261 | public long getStreamingInterval() { | |
262 | return fStreamingInterval; | |
12c155f5 FC |
263 | } |
264 | ||
265 | /** | |
266 | * Default Constructor. | |
267 | * <p> | |
0710697b PT |
268 | * |
269 | * @param name | |
270 | * Name of the trace | |
12c155f5 FC |
271 | * @param path |
272 | * Path to a <b>directory</b> that contain an LTTng trace. | |
273 | * | |
274 | * @exception Exception | |
275 | * (most likely LTTngTraceException or FileNotFoundException) | |
276 | */ | |
0710697b | 277 | public LTTngTrace(String name, String path) throws Exception { |
12c155f5 | 278 | // Call with "wait for completion" true and "skip indexing" false |
0710697b | 279 | this(name, path, null, true, false); |
12c155f5 FC |
280 | } |
281 | ||
282 | /** | |
283 | * Constructor, with control over the indexing. | |
284 | * <p> | |
285 | * | |
0710697b PT |
286 | * @param name |
287 | * Name of the trace | |
12c155f5 FC |
288 | * @param path |
289 | * Path to a <b>directory</b> that contain an LTTng trace. | |
290 | * @param waitForCompletion | |
291 | * Should we wait for indexign to complete before moving on. | |
292 | * | |
293 | * @exception Exception | |
294 | * (most likely LTTngTraceException or FileNotFoundException) | |
295 | */ | |
0710697b | 296 | public LTTngTrace(String name, String path, boolean waitForCompletion) throws Exception { |
12c155f5 | 297 | // Call with "skip indexing" false |
0710697b | 298 | this(name, path, null, waitForCompletion, true); |
12c155f5 FC |
299 | } |
300 | ||
301 | /** | |
302 | * Default constructor, with control over the indexing and possibility to bypass indexation | |
303 | * <p> | |
304 | * | |
0710697b PT |
305 | * @param name |
306 | * Name of the trace | |
12c155f5 FC |
307 | * @param path |
308 | * Path to a <b>directory</b> that contain an LTTng trace. | |
309 | * @param traceLibPath | |
a3767fd9 | 310 | * Path to a <b>directory</b> that contains LTTng trace libraries. |
12c155f5 FC |
311 | * @param waitForCompletion |
312 | * Should we wait for indexign to complete before moving on. | |
313 | * @param bypassIndexing | |
314 | * Should we bypass indexing completly? This is should only be useful for unit testing. | |
315 | * | |
316 | * @exception Exception | |
317 | * (most likely LTTngTraceException or FileNotFoundException) | |
318 | * | |
319 | */ | |
0710697b | 320 | public LTTngTrace(String name, String path, String traceLibPath, boolean waitForCompletion, boolean bypassIndexing) |
12c155f5 | 321 | throws Exception { |
0710697b PT |
322 | super(name, LttngEvent.class, path, CHECKPOINT_PAGE_SIZE, false); |
323 | initTrace(name, path, LttngEvent.class, !bypassIndexing); | |
12c155f5 | 324 | this.traceLibPath = traceLibPath; |
12c155f5 FC |
325 | } |
326 | ||
327 | /* | |
328 | * Copy constructor is forbidden for LttngEvenmStream | |
329 | */ | |
00641a97 | 330 | public LTTngTrace(LTTngTrace other) throws Exception { |
0710697b | 331 | this(other.getName(), other.getPath(), other.getTraceLibPath(), false, true); |
00641a97 FC |
332 | this.fCheckpoints = other.fCheckpoints; |
333 | setTimeRange(new TmfTimeRange(new LttngTimestamp(other.getStartTime()), new LttngTimestamp(other.getEndTime()))); | |
12c155f5 FC |
334 | } |
335 | ||
d4011df2 | 336 | @Override |
12c155f5 FC |
337 | public LTTngTrace copy() { |
338 | LTTngTrace returnedTrace = null; | |
339 | ||
340 | try { | |
341 | returnedTrace = new LTTngTrace(this); | |
342 | } catch (Exception e) { | |
343 | System.out | |
344 | .println("ERROR : Could not create LTTngTrace copy (createTraceCopy).\nError is : " + e.getStackTrace()); //$NON-NLS-1$ | |
345 | } | |
346 | ||
347 | return returnedTrace; | |
9aae0442 | 348 | } |
12c155f5 | 349 | |
550d787e | 350 | @Override |
9b635e61 | 351 | public synchronized LTTngTrace clone() { |
12c155f5 FC |
352 | LTTngTrace clone = null; |
353 | try { | |
354 | clone = (LTTngTrace) super.clone(); | |
355 | try { | |
356 | clone.currentJniTrace = JniTraceFactory.getJniTrace(getPath(), getTraceLibPath(), | |
357 | SHOW_LTT_DEBUG_DEFAULT); | |
358 | } catch (JniException e) { | |
359 | // e.printStackTrace(); | |
360 | } | |
361 | ||
362 | // Export all the event types from the JNI side | |
363 | clone.traceTypes = new HashMap<Integer, LttngEventType>(); | |
364 | clone.traceTypeNames = new Vector<Integer>(); | |
365 | clone.initialiseEventTypes(clone.currentJniTrace); | |
366 | ||
367 | // Verify that all those "default constructor" are safe to use | |
368 | clone.eventTimestamp = new LttngTimestamp(); | |
4641c2f7 | 369 | clone.eventSource = ""; //$NON-NLS-1$ |
12c155f5 FC |
370 | clone.eventType = new LttngEventType(); |
371 | clone.eventContent = new LttngEventContent(clone.currentLttngEvent); | |
4641c2f7 | 372 | clone.eventReference = getName(); |
12c155f5 FC |
373 | |
374 | // Create the skeleton event | |
375 | clone.currentLttngEvent = new LttngEvent(this, clone.eventTimestamp, clone.eventSource, clone.eventType, | |
376 | clone.eventContent, clone.eventReference, null); | |
377 | ||
378 | // Create a new current location | |
379 | clone.previousLocation = new LttngLocation(); | |
380 | ||
381 | // Set the currentEvent to the eventContent | |
382 | clone.eventContent.setEvent(clone.currentLttngEvent); | |
383 | ||
384 | // Set the start time of the trace | |
385 | setTimeRange(new TmfTimeRange(new LttngTimestamp(clone.currentJniTrace.getStartTime().getTime()), | |
386 | new LttngTimestamp(clone.currentJniTrace.getEndTime().getTime()))); | |
387 | } catch (CloneNotSupportedException e) { | |
388 | } | |
389 | ||
390 | return clone; | |
391 | } | |
392 | ||
393 | public String getTraceLibPath() { | |
394 | return traceLibPath; | |
395 | } | |
396 | ||
397 | /* | |
398 | * Fill out the HashMap with "Type" (Tracefile/Marker) | |
399 | * | |
400 | * This should be called at construction once the trace is open | |
401 | */ | |
402 | private void initialiseEventTypes(JniTrace trace) { | |
403 | // Work variables | |
404 | LttngEventType tmpType = null; | |
405 | String[] markerFieldsLabels = null; | |
406 | ||
407 | String newTracefileKey = null; | |
408 | Integer newMarkerKey = null; | |
409 | ||
410 | JniTracefile newTracefile = null; | |
411 | JniMarker newMarker = null; | |
412 | ||
413 | // First, obtain an iterator on TRACEFILES of owned by the TRACE | |
414 | Iterator<String> tracefileItr = trace.getTracefilesMap().keySet().iterator(); | |
415 | ||
416 | while (tracefileItr.hasNext()) { | |
417 | newTracefileKey = tracefileItr.next(); | |
418 | newTracefile = trace.getTracefilesMap().get(newTracefileKey); | |
419 | ||
420 | // From the TRACEFILE read, obtain its MARKER | |
421 | Iterator<Integer> markerItr = newTracefile.getTracefileMarkersMap().keySet().iterator(); | |
422 | while (markerItr.hasNext()) { | |
423 | newMarkerKey = markerItr.next(); | |
424 | newMarker = newTracefile.getTracefileMarkersMap().get(newMarkerKey); | |
425 | ||
426 | // From the MARKER we can obtain the MARKERFIELDS keys (i.e. | |
427 | // labels) | |
428 | markerFieldsLabels = newMarker.getMarkerFieldsHashMap().keySet() | |
429 | .toArray(new String[newMarker.getMarkerFieldsHashMap().size()]); | |
430 | ||
431 | tmpType = new LttngEventType(newTracefile.getTracefileName(), newTracefile.getCpuNumber(), | |
432 | newMarker.getName(), newMarkerKey.intValue(), markerFieldsLabels); | |
433 | ||
434 | // Add the type to the map/vector | |
435 | addEventTypeToMap(tmpType); | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
440 | /* | |
441 | * Add a new type to the HashMap | |
442 | * | |
443 | * As the hashmap use a key format that is a bit dangerous to use, we should always add using this function. | |
444 | */ | |
445 | private void addEventTypeToMap(LttngEventType newEventType) { | |
446 | int newTypeKey = EventTypeKey.getEventTypeHash(newEventType); | |
447 | ||
448 | this.traceTypes.put(newTypeKey, newEventType); | |
449 | this.traceTypeNames.add(newTypeKey); | |
450 | } | |
451 | ||
12c155f5 FC |
452 | /** |
453 | * Return the latest saved location. Note : Modifying the returned location may result in buggy positionning! | |
454 | * | |
455 | * @return The LttngLocation as it was after the last operation. | |
456 | * | |
6c13869b | 457 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
12c155f5 FC |
458 | */ |
459 | @Override | |
460 | public synchronized ITmfLocation<?> getCurrentLocation() { | |
461 | return previousLocation; | |
462 | } | |
463 | ||
464 | /** | |
465 | * Position the trace to the event at the given location. | |
466 | * <p> | |
467 | * NOTE : Seeking by location is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
468 | * using it for small interval. | |
469 | * | |
470 | * @param location | |
471 | * Location of the event in the trace. If no event available at this exact location, we will position | |
472 | * ourself to the next one. | |
473 | * | |
474 | * @return The TmfContext that point to this event | |
475 | * | |
6c13869b FC |
476 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
477 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
478 | */ |
479 | @Override | |
480 | public synchronized TmfContext seekLocation(ITmfLocation<?> location) { | |
481 | ||
482 | // // [lmcfrch] | |
483 | // lastTime = 0; | |
484 | ||
485 | if (PrintDebug) { | |
486 | System.out.println("seekLocation(location) location -> " + location); //$NON-NLS-1$ | |
487 | } | |
488 | ||
489 | // If the location in context is null, create a new one | |
490 | LttngLocation curLocation = null; | |
491 | if (location == null) { | |
492 | curLocation = new LttngLocation(); | |
493 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
494 | context.setRank(ITmfContext.INITIAL_RANK); | |
495 | return context; | |
496 | } else { | |
497 | curLocation = (LttngLocation) location; | |
498 | } | |
499 | ||
500 | // *** NOTE : | |
501 | // Update to location should (and will) be done in SeekEvent. | |
502 | ||
503 | // The only seek valid in LTTng is with the time, we call | |
504 | // seekEvent(timestamp) | |
505 | TmfContext context = seekEvent(curLocation.getOperationTime()); | |
506 | ||
12c155f5 FC |
507 | return context; |
508 | } | |
509 | ||
510 | /** | |
511 | * Position the trace to the event at the given time. | |
512 | * <p> | |
513 | * NOTE : Seeking by time is very fast compare to seeking by position but is still slower than "ReadNext", avoid | |
514 | * using it for small interval. | |
515 | * | |
516 | * @param timestamp | |
517 | * Time of the event in the trace. If no event available at this exact time, we will position ourself to | |
518 | * the next one. | |
519 | * | |
520 | * @return The TmfContext that point to this event | |
521 | * | |
6c13869b FC |
522 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
523 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
524 | */ |
525 | @Override | |
4df4581d | 526 | public synchronized TmfContext seekEvent(ITmfTimestamp timestamp) { |
12c155f5 | 527 | |
12c155f5 FC |
528 | if (PrintDebug) { |
529 | System.out.println("seekEvent(timestamp) timestamp -> " + timestamp); //$NON-NLS-1$ | |
530 | } | |
531 | ||
532 | // Call JNI to seek | |
533 | currentJniTrace.seekToTime(new JniTime(timestamp.getValue())); | |
534 | ||
535 | // Save the time at which we seeked | |
536 | previousLocation.setOperationTime(timestamp.getValue()); | |
537 | // Set the operation marker as seek, to be able to detect we did "seek" | |
538 | // this event | |
539 | previousLocation.setLastOperationSeek(); | |
540 | ||
12c155f5 FC |
541 | LttngLocation curLocation = new LttngLocation(previousLocation); |
542 | ||
543 | return new TmfContext(curLocation); | |
544 | } | |
545 | ||
546 | /** | |
547 | * Position the trace to the event at the given position (rank). | |
548 | * <p> | |
549 | * NOTE : Seeking by position is very slow in LTTng, consider seeking by timestamp. | |
550 | * | |
551 | * @param position | |
552 | * Position (or rank) of the event in the trace, starting at 0. | |
553 | * | |
554 | * @return The TmfContext that point to this event | |
555 | * | |
6c13869b FC |
556 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
557 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
558 | */ |
559 | @Override | |
560 | public synchronized TmfContext seekEvent(long position) { | |
561 | ||
562 | if (PrintDebug) { | |
563 | System.out.println("seekEvent(position) position -> " + position); //$NON-NLS-1$ | |
564 | } | |
565 | ||
4df4581d | 566 | ITmfTimestamp timestamp = null; |
12c155f5 FC |
567 | long index = position / getCacheSize(); |
568 | ||
569 | // Get the timestamp of the closest check point to the given position | |
570 | if (fCheckpoints.size() > 0) { | |
571 | if (index >= fCheckpoints.size()) { | |
572 | index = fCheckpoints.size() - 1; | |
573 | } | |
574 | timestamp = fCheckpoints.elementAt((int) index).getTimestamp(); | |
575 | } | |
576 | // If none, take the start time of the trace | |
577 | else { | |
578 | timestamp = getStartTime(); | |
579 | } | |
580 | ||
581 | // Seek to the found time | |
582 | TmfContext tmpContext = seekEvent(timestamp); | |
583 | tmpContext.setRank((index + 1) * fIndexPageSize); | |
584 | previousLocation = (LttngLocation) tmpContext.getLocation(); | |
585 | ||
586 | // Ajust the index of the event we found at this check point position | |
587 | Long currentPosition = index * getCacheSize(); | |
588 | ||
589 | Long lastTimeValueRead = 0L; | |
590 | ||
591 | // Get the event at current position. This won't move to the next one | |
592 | JniEvent tmpJniEvent = currentJniTrace.findNextEvent(); | |
593 | // Now that we are positionned at the checkpoint, | |
594 | // we need to "readNext" (Position - CheckpointPosition) times or until | |
595 | // trace "run out" | |
596 | while ((tmpJniEvent != null) && (currentPosition < position)) { | |
597 | tmpJniEvent = currentJniTrace.readNextEvent(); | |
598 | currentPosition++; | |
599 | } | |
600 | ||
601 | // If we found our event, save its timestamp | |
602 | if (tmpJniEvent != null) { | |
603 | lastTimeValueRead = tmpJniEvent.getEventTime().getTime(); | |
604 | } | |
605 | ||
606 | // Set the operation marker as seek, to be able to detect we did "seek" | |
607 | // this event | |
608 | previousLocation.setLastOperationSeek(); | |
609 | // Save read event time | |
610 | previousLocation.setOperationTime(lastTimeValueRead); | |
611 | ||
612 | // *** VERIFY *** | |
613 | // Is that too paranoid? | |
614 | // | |
615 | // We don't trust what upper level could do with our internal location | |
616 | // so we create a new one to return instead | |
617 | LttngLocation curLocation = new LttngLocation(previousLocation); | |
618 | ||
619 | return new TmfContext(curLocation); | |
620 | } | |
621 | ||
622 | @Override | |
623 | public TmfContext seekLocation(double ratio) { | |
624 | // TODO Auto-generated method stub | |
625 | return null; | |
626 | } | |
627 | ||
628 | @Override | |
629 | public double getLocationRatio(ITmfLocation<?> location) { | |
630 | // TODO Auto-generated method stub | |
631 | return 0; | |
632 | } | |
633 | ||
634 | /** | |
635 | * Return the event in the trace according to the given context. Read it if necessary. | |
636 | * <p> | |
637 | * Similar (same?) as ParseEvent except that calling GetNext twice read the next one the second time. | |
638 | * | |
639 | * @param context | |
640 | * Current TmfContext where to get the event | |
641 | * | |
642 | * @return The LttngEvent we read of null if no event are available | |
643 | * | |
6c13869b FC |
644 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
645 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
646 | */ |
647 | ||
648 | public int nbEventsRead = 0; | |
649 | ||
650 | @Override | |
651 | public synchronized LttngEvent getNextEvent(TmfContext context) { | |
652 | ||
653 | if (PrintDebug) { | |
654 | System.out.println("getNextEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
655 | + context.getLocation()); | |
656 | } | |
657 | ||
658 | LttngEvent returnedEvent = null; | |
659 | LttngLocation curLocation = null; | |
660 | ||
661 | curLocation = (LttngLocation) context.getLocation(); | |
662 | // If the location in context is null, create a new one | |
663 | if (curLocation == null) { | |
664 | curLocation = getCurrentLocation(context); | |
665 | } | |
666 | ||
12c155f5 FC |
667 | // *** Positioning trick : |
668 | // GetNextEvent only read the trace if : | |
669 | // 1- The last operation was NOT a ParseEvent --> A read is required | |
670 | // OR | |
671 | // 2- The time of the previous location is different from the current | |
672 | // one --> A seek + a read is required | |
673 | if ((!(curLocation.isLastOperationParse())) | |
674 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
675 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
676 | if (PrintDebug) { | |
677 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
678 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
679 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
680 | } | |
681 | seekEvent(curLocation.getOperationTime()); | |
682 | } | |
683 | // Read the next event from the trace. The last one will NO LONGER | |
684 | // BE VALID. | |
685 | returnedEvent = readNextEvent(curLocation); | |
686 | ||
687 | } else { | |
688 | // No event was read, just return the one currently loaded (the last | |
689 | // one we read) | |
690 | returnedEvent = currentLttngEvent; | |
691 | ||
692 | // *** IMPORTANT! | |
693 | // Reset (erase) the operation marker to both location, to be able | |
694 | // to detect we did NOT "read" this event | |
695 | previousLocation.resetLocationState(); | |
696 | curLocation.resetLocationState(); | |
697 | } | |
698 | ||
699 | // If we read an event, set it's time to the locations (both previous | |
700 | // and current) | |
701 | if (returnedEvent != null) { | |
702 | setPreviousAndCurrentTimes(context, returnedEvent, curLocation); | |
12c155f5 FC |
703 | } |
704 | ||
705 | return returnedEvent; | |
706 | } | |
707 | ||
708 | // this method was extracted for profiling purposes | |
709 | private void setPreviousAndCurrentTimes(TmfContext context, LttngEvent returnedEvent, LttngLocation curLocation) { | |
710 | ||
4df4581d | 711 | ITmfTimestamp eventTimestamp = returnedEvent.getTimestamp(); |
12c155f5 FC |
712 | // long eventTime = eventTimestamp.getValue(); |
713 | previousLocation.setOperationTime(eventTimestamp.getValue()); | |
714 | curLocation.setOperationTime(eventTimestamp.getValue()); | |
715 | updateIndex(context, context.getRank(), eventTimestamp); | |
716 | context.updateRank(1); | |
717 | } | |
718 | ||
d7dbf09a | 719 | protected void updateIndex(TmfContext context, long rank, ITmfTimestamp timestamp) { |
12c155f5 FC |
720 | |
721 | if (getStartTime().compareTo(timestamp, false) > 0) | |
722 | setStartTime(timestamp); | |
723 | if (getEndTime().compareTo(timestamp, false) < 0) | |
724 | setEndTime(timestamp); | |
725 | if (rank != ITmfContext.UNKNOWN_RANK) { | |
726 | if (fNbEvents <= rank) | |
727 | fNbEvents = rank + 1; | |
728 | // Build the index as we go along | |
729 | if ((rank % fIndexPageSize) == 0) { | |
730 | // Determine the table position | |
731 | long position = rank / fIndexPageSize; | |
732 | // Add new entry at proper location (if empty) | |
733 | if (fCheckpoints.size() == position) { | |
734 | addCheckPoint(context, timestamp); | |
735 | } | |
736 | } | |
737 | } | |
738 | } | |
739 | ||
d7dbf09a | 740 | private void addCheckPoint(TmfContext context, ITmfTimestamp timestamp) { |
12c155f5 FC |
741 | ITmfLocation<?> location = context.getLocation().clone(); |
742 | fCheckpoints.add(new TmfCheckpoint(timestamp.clone(), location)); | |
743 | } | |
744 | ||
745 | // this method was extracted for profiling purposes | |
746 | private LttngEvent readNextEvent(LttngLocation curLocation) { | |
747 | LttngEvent returnedEvent; | |
748 | // Read the next event from the trace. The last one will NO LONGER BE | |
749 | // VALID. | |
750 | returnedEvent = readEvent(curLocation); | |
751 | nbEventsRead++; | |
752 | ||
753 | // Set the operation marker as read to both location, to be able to | |
754 | // detect we did "read" this event | |
755 | previousLocation.setLastOperationReadNext(); | |
756 | curLocation.setLastOperationReadNext(); | |
757 | return returnedEvent; | |
758 | } | |
759 | ||
760 | // this method was extracted for profiling purposes | |
761 | private LttngLocation getCurrentLocation(TmfContext context) { | |
762 | LttngLocation curLocation; | |
763 | curLocation = new LttngLocation(); | |
764 | context.setLocation(curLocation); | |
765 | return curLocation; | |
766 | } | |
767 | ||
768 | /** | |
769 | * Return the event in the trace according to the given context. Read it if necessary. | |
770 | * <p> | |
771 | * Similar (same?) as GetNextEvent except that calling ParseEvent twice will return the same event | |
772 | * | |
773 | * @param context | |
774 | * Current TmfContext where to get the event | |
775 | * | |
776 | * @return The LttngEvent we read of null if no event are available | |
777 | * | |
6c13869b FC |
778 | * @see org.eclipse.linuxtools.lttng.core.event.LttngLocation |
779 | * @see org.eclipse.linuxtools.tmf.core.trace.TmfContext | |
12c155f5 FC |
780 | */ |
781 | @Override | |
782 | public synchronized LttngEvent parseEvent(TmfContext context) { | |
783 | ||
784 | if (PrintDebug) { | |
785 | System.out.println("parseEvent(context) context.getLocation() -> " //$NON-NLS-1$ | |
786 | + context.getLocation()); | |
787 | } | |
788 | ||
789 | LttngEvent returnedEvent = null; | |
790 | LttngLocation curLocation = null; | |
791 | ||
792 | // If the location in context is null, create a new one | |
793 | if (context.getLocation() == null) { | |
794 | curLocation = new LttngLocation(); | |
795 | context.setLocation(curLocation); | |
796 | } | |
797 | // Otherwise, we use the one in context; it should be a valid | |
798 | // LttngLocation | |
799 | else { | |
800 | curLocation = (LttngLocation) context.getLocation(); | |
801 | } | |
802 | ||
803 | // *** HACK *** | |
804 | // TMF assumes it is possible to read (GetNextEvent) to the next Event | |
805 | // once ParseEvent() is called | |
806 | // In LTTNG, there is not difference between "Parsing" and "Reading" an | |
807 | // event. | |
808 | // So, before "Parsing" an event, we have to make sure we didn't "Read" | |
809 | // it alreafy. | |
810 | // Also, "Reading" invalidate the previous Event in LTTNG and seek back | |
811 | // is very costly, | |
812 | // so calling twice "Parse" will return the same event, giving a way to | |
813 | // get the "Currently loaded" event | |
814 | ||
815 | // *** Positionning trick : | |
816 | // ParseEvent only read the trace if : | |
817 | // 1- The last operation was NOT a ParseEvent or a GetNextEvent --> A | |
818 | // read is required | |
819 | // OR | |
820 | // 2- The time of the previous location is different from the current | |
821 | // one --> A seek + a read is required | |
822 | if (((!(curLocation.isLastOperationParse())) && ((!(curLocation.isLastOperationReadNext())))) | |
823 | || (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue())) { | |
824 | // Previous time != Current time : We need to reposition to the | |
825 | // current time | |
826 | if (previousLocation.getOperationTimeValue() != curLocation.getOperationTimeValue()) { | |
827 | if (PrintDebug) { | |
828 | System.out.println("\t\tSeeking in getNextEvent. [ LastTime : " //$NON-NLS-1$ | |
829 | + previousLocation.getOperationTimeValue() + " CurrentTime" //$NON-NLS-1$ | |
830 | + curLocation.getOperationTimeValue() + " ]"); //$NON-NLS-1$ | |
831 | } | |
832 | seekEvent(curLocation.getOperationTime()); | |
833 | } | |
834 | ||
835 | // Read the next event from the trace. The last one will NO LONGER | |
836 | // BE VALID. | |
837 | returnedEvent = readEvent(curLocation); | |
838 | } else { | |
839 | // No event was read, just return the one currently loaded (the last | |
840 | // one we read) | |
841 | returnedEvent = currentLttngEvent; | |
842 | } | |
843 | ||
844 | // If we read an event, set it's time to the locations (both previous | |
845 | // and current) | |
846 | if (returnedEvent != null) { | |
847 | previousLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
848 | curLocation.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
849 | } | |
850 | ||
851 | // Set the operation marker as parse to both location, to be able to | |
852 | // detect we already "read" this event | |
853 | previousLocation.setLastOperationParse(); | |
854 | curLocation.setLastOperationParse(); | |
855 | ||
856 | return returnedEvent; | |
857 | } | |
858 | ||
859 | /* | |
860 | * Read the next event from the JNI and convert it as Lttng Event<p> | |
861 | * | |
862 | * @param location Current LttngLocation that to be updated with the event timestamp | |
863 | * | |
864 | * @return The LttngEvent we read of null if no event are available | |
865 | * | |
866 | * @see org.eclipse.linuxtools.lttng.event.LttngLocation | |
867 | * | |
868 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
869 | */ | |
870 | private synchronized LttngEvent readEvent(LttngLocation location) { | |
871 | LttngEvent returnedEvent = null; | |
872 | JniEvent tmpEvent = null; | |
873 | ||
874 | // Read the next event from JNI. THIS WILL INVALIDATE THE CURRENT LTTNG | |
875 | // EVENT. | |
876 | tmpEvent = currentJniTrace.readNextEvent(); | |
877 | ||
878 | if (tmpEvent != null) { | |
879 | // *** NOTE | |
880 | // Convert will update the currentLttngEvent | |
881 | returnedEvent = convertJniEventToTmf(tmpEvent); | |
882 | ||
883 | location.setOperationTime((LttngTimestamp) returnedEvent.getTimestamp()); | |
884 | } | |
885 | // *** NOTE | |
886 | // If the read failed (likely the last event in the trace), set the | |
887 | // LastReadTime to the JNI time | |
888 | // That way, even if we try to read again, we will step over the bogus | |
889 | // seek and read | |
890 | else { | |
891 | location.setOperationTime(getEndTime().getValue() + 1); | |
892 | } | |
893 | ||
894 | return returnedEvent; | |
895 | } | |
896 | ||
897 | /** | |
898 | * Method to convert a JniEvent into a LttngEvent. | |
899 | * <p> | |
900 | * | |
901 | * Note : This method will call LttngEvent convertEventJniToTmf(JniEvent, boolean) with a default value for | |
902 | * isParsingNeeded | |
903 | * | |
904 | * @param newEvent | |
905 | * The JniEvent to convert into LttngEvent | |
906 | * | |
907 | * @return The converted LttngEvent | |
908 | * | |
909 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
6c13869b | 910 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
911 | */ |
912 | public synchronized LttngEvent convertJniEventToTmf(JniEvent newEvent) { | |
913 | currentLttngEvent = convertJniEventToTmf(newEvent, IS_PARSING_NEEDED_DEFAULT); | |
914 | ||
915 | return currentLttngEvent; | |
916 | } | |
917 | ||
918 | /** | |
919 | * Method to convert a JniEvent into a LttngEvent | |
920 | * | |
921 | * @param jniEvent | |
922 | * The JniEvent to convert into LttngEvent | |
923 | * @param isParsingNeeded | |
924 | * A boolean value telling if the event should be parsed or not. | |
925 | * | |
926 | * @return The converted LttngEvent | |
927 | * | |
928 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniEvent | |
6c13869b | 929 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
930 | */ |
931 | public synchronized LttngEvent convertJniEventToTmf(JniEvent jniEvent, boolean isParsingNeeded) { | |
932 | ||
933 | if (UniqueEvent) { | |
934 | ||
935 | // *** | |
936 | // UNHACKED : We can no longer do that because TCF need to maintain | |
937 | // several events at once. | |
938 | // This is very slow to do so in LTTng, this has to be temporary. | |
939 | // *** HACK *** | |
940 | // To save time here, we only set value instead of allocating new | |
941 | // object | |
942 | // This give an HUGE performance improvement | |
943 | // all allocation done in the LttngTrace constructor | |
944 | // *** | |
945 | eventTimestamp.setValue(jniEvent.getEventTime().getTime()); | |
99005796 | 946 | eventSource = jniEvent.requestEventSource(); |
12c155f5 FC |
947 | |
948 | eventType = traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent)); | |
949 | ||
4641c2f7 FC |
950 | String fullTracePath = getName(); |
951 | String reference = fullTracePath.substring(fullTracePath.lastIndexOf('/') + 1); | |
952 | currentLttngEvent.setReference(reference); | |
12c155f5 FC |
953 | |
954 | eventContent.emptyContent(); | |
955 | ||
956 | currentLttngEvent.setType(eventType); | |
957 | // Save the jni reference | |
958 | currentLttngEvent.updateJniEventReference(jniEvent); | |
959 | ||
960 | // Parse now if was asked | |
961 | // Warning : THIS IS SLOW | |
962 | if (isParsingNeeded) { | |
963 | eventContent.getFields(); | |
964 | } | |
965 | ||
966 | return currentLttngEvent; | |
967 | } else { | |
968 | return convertJniEventToTmfMultipleEventEvilFix(jniEvent, isParsingNeeded); | |
969 | } | |
970 | ||
971 | } | |
972 | ||
973 | /** | |
974 | * This method is a temporary fix to support multiple events at once in TMF This is expected to be slow and should | |
975 | * be fixed in another way. See comment in convertJniEventToTmf(); | |
976 | * | |
977 | * @param jniEvent | |
978 | * The current JNI Event | |
979 | * @return Current Lttng Event fully parsed | |
980 | */ | |
981 | private synchronized LttngEvent convertJniEventToTmfMultipleEventEvilFix(JniEvent jniEvent, boolean isParsingNeeded) { | |
982 | // *** HACK *** | |
983 | // Below : the "fix" with all the new and the full-parse | |
984 | // Allocating new memory is slow. | |
985 | // Parsing every events is very slow. | |
986 | eventTimestamp = new LttngTimestamp(jniEvent.getEventTime().getTime()); | |
99005796 | 987 | eventSource = jniEvent.requestEventSource(); |
4641c2f7 | 988 | eventReference = getName(); |
12c155f5 FC |
989 | eventType = new LttngEventType(traceTypes.get(EventTypeKey.getEventTypeHash(jniEvent))); |
990 | eventContent = new LttngEventContent(currentLttngEvent); | |
991 | currentLttngEvent = new LttngEvent(this, eventTimestamp, eventSource, eventType, eventContent, eventReference, | |
992 | null); | |
993 | ||
994 | // The jni reference is no longer reliable but we will keep it anyhow | |
995 | currentLttngEvent.updateJniEventReference(jniEvent); | |
996 | // Ensure that the content is correctly set | |
997 | eventContent.setEvent(currentLttngEvent); | |
998 | ||
999 | // Parse the event if it was needed | |
1000 | // *** WARNING *** | |
1001 | // ONLY for testing, NOT parsing events with non-unique events WILL | |
1002 | // result in segfault in the JVM | |
1003 | if (isParsingNeeded) { | |
1004 | eventContent.getFields(); | |
1005 | } | |
1006 | ||
1007 | return currentLttngEvent; | |
1008 | } | |
1009 | ||
1010 | /** | |
1011 | * Reference to the current LttngTrace we are reading from. | |
1012 | * <p> | |
1013 | * | |
1014 | * Note : This bypass the framework and should not be use, except for testing! | |
1015 | * | |
1016 | * @return Reference to the current LttngTrace | |
1017 | * | |
1018 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1019 | */ | |
1020 | public JniTrace getCurrentJniTrace() { | |
1021 | return currentJniTrace; | |
1022 | } | |
1023 | ||
1024 | /** | |
1025 | * Return a reference to the current LttngEvent we have in memory. | |
1026 | * | |
1027 | * @return The current (last read) LttngEvent | |
1028 | * | |
6c13869b | 1029 | * @see org.eclipse.linuxtools.lttng.core.event.LttngEvent |
12c155f5 FC |
1030 | */ |
1031 | public synchronized LttngEvent getCurrentEvent() { | |
1032 | return currentLttngEvent; | |
1033 | } | |
1034 | ||
1035 | /** | |
1036 | * Get the major version number for the current trace | |
1037 | * | |
1038 | * @return Version major or -1 if unknown | |
1039 | * | |
1040 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1041 | * | |
1042 | */ | |
1043 | public short getVersionMajor() { | |
1044 | if (currentJniTrace != null) { | |
1045 | return currentJniTrace.getLttMajorVersion(); | |
1046 | } else { | |
1047 | return -1; | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | /** | |
1052 | * Get the minor version number for the current trace | |
1053 | * | |
1054 | * @return Version minor or -1 if unknown | |
1055 | * | |
1056 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1057 | * | |
1058 | */ | |
1059 | public short getVersionMinor() { | |
1060 | if (currentJniTrace != null) { | |
1061 | return currentJniTrace.getLttMinorVersion(); | |
1062 | } else { | |
1063 | return -1; | |
1064 | } | |
1065 | } | |
1066 | ||
1067 | /** | |
1068 | * Get the number of CPU for this trace | |
1069 | * | |
1070 | * @return Number of CPU or -1 if unknown | |
1071 | * | |
1072 | * @see org.eclipse.linuxtools.org.eclipse.linuxtools.lttng.jni.JniTrace | |
1073 | * | |
1074 | */ | |
1075 | public int getCpuNumber() { | |
1076 | if (currentJniTrace != null) { | |
1077 | return currentJniTrace.getCpuNumber(); | |
1078 | } else { | |
1079 | return -1; | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | /** | |
1084 | * Print the content of the checkpoint vector. | |
1085 | * <p> | |
1086 | * | |
1087 | * This is intended for debug purpose only. | |
1088 | */ | |
1089 | public void printCheckpointsVector() { | |
1090 | System.out.println("StartTime : " //$NON-NLS-1$ | |
1091 | + getTimeRange().getStartTime().getValue()); | |
1092 | System.out.println("EndTime : " //$NON-NLS-1$ | |
1093 | + getTimeRange().getEndTime().getValue()); | |
1094 | ||
1095 | for (int pos = 0; pos < fCheckpoints.size(); pos++) { | |
1096 | System.out.print(pos + ": " + "\t"); //$NON-NLS-1$ //$NON-NLS-2$ | |
1097 | System.out.print(fCheckpoints.get(pos).getTimestamp() + "\t"); //$NON-NLS-1$ | |
1098 | System.out.println(fCheckpoints.get(pos).getLocation()); | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | @Override | |
1103 | public synchronized void dispose() { | |
1104 | if (currentJniTrace != null) | |
1105 | currentJniTrace.closeTrace(); | |
1106 | super.dispose(); | |
1107 | } | |
1108 | ||
1109 | /** | |
1110 | * Return a String identifying this trace. | |
1111 | * | |
1112 | * @return String that identify this trace | |
1113 | */ | |
1114 | @Override | |
3b38ea61 | 1115 | @SuppressWarnings("nls") |
12c155f5 FC |
1116 | public String toString() { |
1117 | String returnedData = ""; | |
64fe8e8a | 1118 | |
12c155f5 FC |
1119 | returnedData += "Path :" + getPath() + " "; |
1120 | returnedData += "Trace:" + currentJniTrace + " "; | |
1121 | returnedData += "Event:" + currentLttngEvent; | |
64fe8e8a | 1122 | |
12c155f5 FC |
1123 | return returnedData; |
1124 | } | |
cb866e08 | 1125 | |
28b94d61 FC |
1126 | } |
1127 | ||
1128 | /* | |
1129 | * EventTypeKey inner class | |
1130 | * | |
12c155f5 | 1131 | * This class is used to make the process of generating the HashMap key more transparent and so less error prone to use |
28b94d61 | 1132 | */ |
64fe8e8a | 1133 | final class EventTypeKey { |
12c155f5 FC |
1134 | // *** WARNING *** |
1135 | // These two getEventTypeKey() functions should ALWAYS construct the key the | |
1136 | // same ways! | |
1137 | // Otherwise, every type search will fail! | |
64fe8e8a | 1138 | |
12c155f5 FC |
1139 | // added final to encourage inlining. |
1140 | ||
1141 | // generating a hash code by hand to avoid a string creation | |
1142 | final static public int getEventTypeHash(LttngEventType newEventType) { | |
1143 | return generateHash(newEventType.getTracefileName(), newEventType.getCpuId(), newEventType.getMarkerName()); | |
1144 | } | |
1145 | ||
1146 | final private static int generateHash(String traceFileName, long cpuNumber, String markerName) { | |
1147 | // 0x1337 is a prime number. The number of CPUs is always under 8192 on | |
1148 | // the current kernel, so this will work with the current linux kernel. | |
1149 | int cpuHash = (int) (cpuNumber * (0x1337)); | |
1150 | return traceFileName.hashCode() ^ (cpuHash) ^ markerName.hashCode(); | |
1151 | } | |
1152 | ||
1153 | // generating a hash code by hand to avoid a string creation | |
1154 | final static public int getEventTypeHash(JniEvent newEvent) { | |
1155 | return generateHash(newEvent.getParentTracefile().getTracefileName(), newEvent.getParentTracefile() | |
1156 | .getCpuNumber(), newEvent.requestEventMarker().getName()); | |
1157 | } | |
64fe8e8a | 1158 | |
a3767fd9 | 1159 | } |